420660540672 has 72 divisors (see below), whose sum is σ = 1123392162144. Its totient is φ = 139741538304.

The previous prime is 420660540557. The next prime is 420660540689. The reversal of 420660540672 is 276045066024.

It is a super-3 number, since 3×420660540672³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709678 + ... + 1159725.

Almost surely, 2^420660540672 is an apocalyptic number.

It is an amenable number.

420660540672 is an abundant number, since it is smaller than the sum of its proper divisors (702731621472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420660540672 is a wasteful number, since it uses less digits than its factorization.

420660540672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869715 (or 1869701 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 420660540672 in words is "four hundred twenty billion, six hundred sixty million, five hundred forty thousand, six hundred seventy-two".